Google rolls out Gemini 4 Carbon to AI Ultra subscribers

TL;DR Gemini 4 Carbon is rolling out to Google AI Ultra subscribers in the Gemini app, Search’s AI Mode, and Antigravity. The rollout expands access beyond the cybersecurity defenders who got the model in late October. Paying developers and businesses can now use it, too. Standard API pricing starts at $2 per million input tokens and $10 per million output tokens. Both rates double on December 1. When Google unveiled Gemini 4 Carbon in late October, a select group of cybersecurity defenders was the first to get it. Two weeks later, the model is making its way into the Gemini app and AI Mode in Google Search. Google began the wider rollout on November 10 , opening access to AI Ultra subscribers, paying developers, and businesses. Google AI Ultra starts at $100 a month in the US and also unlocks Carbon in Antigravity, Google’s AI coding platform.